In theory someone could have five zero-score questions with 10k views each, earning them five
Famous Question badges, yet they wouldn't even qualify for the
Curious badge. IMHO, a highly scored question isn't the only quality metric. If someone manages to drive so much traffic, this has got to count for something.
I'm not suggesting to simply take views at their face value. As other have (rightly) suggested, questions can get traffic easily with spam links or by being too broad. I'm only suggesting that this has to count for something.